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1 February, 19:58

Find x if f (x) = 2x + 7 and f (x) = - 1.

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  1. 1 February, 20:04
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    F (x) = 2x+7

    -1 = 2x+7

    -7 - 7

    -8 = 2x

    -8/2 = 2x/2

    -4 = x

    x = - 4
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